US stocks took a beating this week, only to face more turbulence from Europe as Greece grapples with rising political uncertainty that could cost the country's crucial EU-IMF bailout.
Investors are looking to "catch their breath" after a stressful beginning to the year, said Gregori Volokhine at Meeschaert.
But, "with the challenges coming from Europe, it's very difficult," he said.
The main stock indices posted a second straight week in the red.
The blue-chip Dow Jones Industrial Average lost 1.7 percent over the week, closing Friday at 12,820.60.
The broader Standard & Poor's 500-stock index fell 0.76 percent to 1,353.39, while the tech-rich Nasdaq also shed 0.76 percent, to 2,933.82.
In debt-wracked Greece, another election was almost certain after austerity opponents blocked the formation of a new government again Friday.
Socialist party boss Evangelos Venizelos was the third party leader who tried and failed to cobble together a government after inconclusive elections Sunday.
But analysts at Charles Schwab & Co. said that Europe's troubles were overshadowed Friday on Wall Street by shocks from the world's two biggest economies.
"China released a plethora of disappointing data today, accentuated by industrial production expanding at its slowest pace since 2009. Back in the US, JPMorgan Chase disclosed a $2 billion trading loss on a failed hedging strategy," they said.
The disclosure by JPMorgan, which has been leading the industry's fight against new US financial regulations, sparked calls from politicians and analysts for tighter reins on government-insured banks trading on their own portfolios.
JPMorgan's blunder battered markets Friday, but stocks showed resilience, paring opening losses to end mostly lower, with only the Nasdaq making a fractional gain.
A smattering of modestly better US economic data this week helped to take the sting off a poor April jobs data last Friday.
New claims for unemployment benefits, a sign of the pace of layoffs, fell for a second straight week.
The US trade gap widened in March, but analysts focused on record imports as a sign of sturdy demand.
With energy prices sinking 1.4 percent in April, US wholesale prices fell for the first time this year, reaffirming the Federal Reserve's view that inflation remains subdued. Consumer prices data is slated Tuesday.
"Most recent indicators suggest that the disappointing April jobs data were more of a technicality than representing a fundamental slowdown," said Douglas Porter at BMO Capital Markets.
"Receding jobless claims, strong import growth, and easing gasoline prices all hint that the economy will improve in the months ahead."
The highlight of next week's calendar will be the minutes of the Federal Reserve's April 24-25 policy meeting.
Investors are expected to pore over the Federal Open Market Committee information for clues to the direction of the US economy and interest rates.
Retail sales numbers for April are due Tuesday, followed Thursday by April construction starts and building permits and the weekly jobless claims data.
But the big buzz building on Wall Street was being generated by Facebook, the world's leading social network, which is expected to make its long-awaited stock market debut next Friday, May 18.
In a filing with the US Securities and Exchange Commission on Thursday, Facebook set a price range of $28 to $35 for its shares, which would value the firm at between $70 billion and $87.5 billion.© ANP/AFP